| /* |
| * Copyright 2000-2001 VA Linux Systems, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| #include "mtypes.h" |
| #include "mgadd.h" |
| #include "mgacontext.h" |
| #include "mgaspan.h" |
| #include "mgaioctl.h" |
| #include "swrast/swrast.h" |
| |
| #define DBG 0 |
| |
| #define LOCAL_VARS \ |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ |
| __DRIscreenPrivate *sPriv = mmesa->driScreen; \ |
| driRenderbuffer *drb = (driRenderbuffer *) rb; \ |
| const __DRIdrawablePrivate *dPriv = drb->dPriv; \ |
| GLuint pitch = drb->pitch; \ |
| GLuint height = dPriv->h; \ |
| char *buf = (char *)(sPriv->pFB + \ |
| drb->offset + \ |
| dPriv->x * drb->cpp + \ |
| dPriv->y * pitch); \ |
| GLuint p; \ |
| (void) buf; (void) p |
| |
| |
| |
| #define LOCAL_DEPTH_VARS \ |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ |
| __DRIscreenPrivate *sPriv = mmesa->driScreen; \ |
| driRenderbuffer *drb = (driRenderbuffer *) rb; \ |
| const __DRIdrawablePrivate *dPriv = drb->dPriv; \ |
| GLuint pitch = drb->pitch; \ |
| GLuint height = dPriv->h; \ |
| char *buf = (char *)(sPriv->pFB + \ |
| drb->offset + \ |
| dPriv->x * drb->cpp + \ |
| dPriv->y * pitch) |
| |
| #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS |
| |
| #define HW_LOCK() |
| |
| /* FIXME could/should we use dPriv->numClipRects like the other drivers? */ |
| #define HW_CLIPLOOP() \ |
| do { \ |
| int _nc = mmesa->numClipRects; \ |
| while (_nc--) { \ |
| int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX; \ |
| int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY; \ |
| int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX; \ |
| int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY; |
| |
| #define HW_ENDCLIPLOOP() \ |
| } \ |
| } while (0) |
| |
| #define HW_UNLOCK() |
| |
| |
| |
| #define Y_FLIP(_y) (height - _y - 1) |
| |
| /* 16 bit, RGB565 color spanline and pixel functions |
| */ |
| #define SPANTMP_PIXEL_FMT GL_RGB |
| #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5 |
| |
| #define TAG(x) mga##x##_565 |
| #define TAG2(x,y) mga##x##_565##y |
| #include "spantmp2.h" |
| |
| /* 32 bit, ARGB8888 color spanline and pixel functions |
| */ |
| #define SPANTMP_PIXEL_FMT GL_BGRA |
| #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV |
| |
| #define TAG(x) mga##x##_8888 |
| #define TAG2(x,y) mga##x##_8888##y |
| #include "spantmp2.h" |
| |
| |
| /* 16 bit depthbuffer functions. |
| */ |
| #define VALUE_TYPE GLushort |
| |
| #define WRITE_DEPTH( _x, _y, d ) \ |
| *(GLushort *)(buf + (_x)*2 + (_y)*pitch) = d; |
| |
| #define READ_DEPTH( d, _x, _y ) \ |
| d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch); |
| |
| #define TAG(x) mga##x##_z16 |
| #include "depthtmp.h" |
| |
| |
| |
| |
| /* 32 bit depthbuffer functions. |
| */ |
| #define VALUE_TYPE GLuint |
| |
| #define WRITE_DEPTH( _x, _y, d ) \ |
| *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = d; |
| |
| #define READ_DEPTH( d, _x, _y ) \ |
| d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); |
| |
| #define TAG(x) mga##x##_z32 |
| #include "depthtmp.h" |
| |
| |
| |
| /* 24/8 bit interleaved depth/stencil functions |
| */ |
| #define VALUE_TYPE GLuint |
| |
| #define WRITE_DEPTH( _x, _y, d ) { \ |
| GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \ |
| tmp &= 0xff; \ |
| tmp |= (d) << 8; \ |
| *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp; \ |
| } |
| |
| #define READ_DEPTH( d, _x, _y ) { \ |
| d = (*(GLuint *)(buf + (_x)*4 + (_y)*pitch) & ~0xff) >> 8; \ |
| } |
| |
| #define TAG(x) mga##x##_z24_s8 |
| #include "depthtmp.h" |
| |
| #define WRITE_STENCIL( _x, _y, d ) { \ |
| GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \ |
| tmp &= 0xffffff00; \ |
| tmp |= d & 0xff; \ |
| *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \ |
| } |
| |
| #define READ_STENCIL( d, _x, _y ) \ |
| d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff; |
| |
| #define TAG(x) mga##x##_z24_s8 |
| #include "stenciltmp.h" |
| |
| |
| static void |
| mgaSpanRenderStart( GLcontext *ctx ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| FLUSH_BATCH( mmesa ); |
| LOCK_HARDWARE_QUIESCENT( mmesa ); |
| } |
| |
| static void |
| mgaSpanRenderFinish( GLcontext *ctx ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| _swrast_flush( ctx ); |
| UNLOCK_HARDWARE( mmesa ); |
| } |
| |
| /** |
| * Initialize the driver callbacks for the read / write span functions. |
| * |
| * \bug |
| * To really support RGB888 and RGBA8888 visuals, we need separate read and |
| * write routines for 888 and 8888. We also need to determine whether or not |
| * the visual has destination alpha. |
| */ |
| void mgaDDInitSpanFuncs( GLcontext *ctx ) |
| { |
| struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); |
| swdd->SpanRenderStart = mgaSpanRenderStart; |
| swdd->SpanRenderFinish = mgaSpanRenderFinish; |
| } |
| |
| |
| /** |
| * Plug in the Get/Put routines for the given driRenderbuffer. |
| */ |
| void |
| mgaSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis) |
| { |
| if (drb->Base.InternalFormat == GL_RGBA) { |
| if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) { |
| mgaInitPointers_565(&drb->Base); |
| } |
| else { |
| mgaInitPointers_8888(&drb->Base); |
| } |
| } |
| else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) { |
| mgaInitDepthPointers_z16(&drb->Base); |
| } |
| else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) { |
| mgaInitDepthPointers_z24_s8(&drb->Base); |
| } |
| else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT32) { |
| mgaInitDepthPointers_z32(&drb->Base); |
| } |
| else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) { |
| mgaInitStencilPointers_z24_s8(&drb->Base); |
| } |
| } |